Improvement in lubricating devices



CHARLES HmscH.

Improvement in Lubricating Device.

,954. Patentedyiviarch26,1872.

AM, mmLlmasHAM/o m Nx/ aman/14": Pneu-:5J

UNITED STATES CHARLES HIRSCH, OF BUFFALO, NEW YORK.

IMPROVEMENT IN LUBBICATING DEVICES.

Specification forming putt of Letters Patent No. 124,954, dated March 26, 187 2.

SPECIFICATION.

I, CHARLES HIRsCII, of the city of Buiial'o, in the county of Erie and State of New York, haveinvented anImproved Lubricating-Pump, of "which the following is a speciiication:

My improvements relate more particularly t0 that class of pumps which are used for lubricating steam-engines; and the invention consists in the peculiar construction and arrangement of the parts whereby the oil-cup, puinp-barrel, and discharge-pipe are enabled to be cast in one piece; and also in the special arrangement of the valves and oil-passages.

In the accompanying drawing, Figure I is a longitudinal section, and Fig. Il a plan view of my improved pump. Fig. III is a cross-sea tiiiin line :v 5v, Fig. I.

Like letters designate like parts in each of the figures.

A is the oil-cup, preferably of the form of any oblate spheroid; B, the pump-barrel, which projects both outside and inside of the cup.

'lle inner end of this'pump-barrel connects at right angles with a hollow portion or pipe, C, which forms the valvechamber c and oil inductionlpassage c', the latter being an extension of the valve-chamber into which the pumpbarrel opens. To the opposite side of the valve-chamber connects the dischargepipe I, which extends outward through the opposite end of the oil-cup from that of the pump-barrel;` the latter andthe discharge-pipe both being in line of the longer diameter of the oilcup. The above specified parts, by the use of the proper cores, are all cast entire or in one piece. The hollow pipe or casting C does not extend quite to the bottom of the cup, leaving sufficient space between its lower end and the cup for the Ilow of 4the oil into the induction passage c. -At the -upper end of the passage c is arranged a check-valve, d, which prevents the reflux of the oil from the valve-chamber. d is a similar valve at the top of the valvechamber, which prevents the oil, after it has y entered the space above this valve, from ilowing back. Above the valve d isa passage, e,

opening into the discharge-pipe. The top of the valvechan1ber is closed by a screw=plu g, s.

F is a stpcock connection, fastened firmly in place at any convenient point by means of screws and a flange, f, cast therewith. 7"1 is the stopcock, and j2 ftwo nozzles. To the nozzle f3 a pipe may be made to connect with the engine at any required point. The pump is readily connected with the nozzle j?, when desired, by means of a thread cut on the projecting end or nozzle of the discharge-pipe. The plunger of 'the pump is madeV solid, as shown, with end slightly enlarged, and is retained in the barrel by a nut or collar, h, which screws onto the end of the pump-barrel, as clearly shown in Fig. I. The oil-cup is provided, at its top, with an opening, in which .is screwed a iianged strainer, q, through which the oil is strained as it is supplied to the cup. The cup A being filled with oil, the operation of the plump becomes obvious from the foregoing description.

By my improved mode of construction, a4

pump can be made at a comparatively small cost, which will be efficient in its operation and not liable'to get out of order. The stopcock connection enables the pump to be used atthe most convenient point away from the heat of the engine, and can be readily detached, when required, by simply closing the cock f1. v

What I claim as'my invention is 1. The combination of the cup A, pumpbarrel B, hollow casting G, and dischargepipe P, arranged as described, and capable of being cast in one piece, substantially as here inbefore set forth.

2. The arrangement, with the cup A, pump- 

